only build dump_syms_mac for x86 hosts

configure

 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for breakpad 0.1.
 #
 # Report bugs to <google-breakpad-dev@googlegroups.com>.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
 #
 #
@@ skipping 622 matching lines @@
 GTEST_CONFIG
 GMOCK_LIBS
 GMOCK_CFLAGS
 GMOCK_CONFIG
 SYSTEM_TEST_LIBS_FALSE
 SYSTEM_TEST_LIBS_TRUE
 DISABLE_TOOLS_FALSE
 DISABLE_TOOLS_TRUE
 DISABLE_PROCESSOR_FALSE
 DISABLE_PROCESSOR_TRUE
+X86_HOST_FALSE
+X86_HOST_TRUE
 ANDROID_HOST_FALSE
 ANDROID_HOST_TRUE
 LINUX_HOST_FALSE
 LINUX_HOST_TRUE
 HAVE_CXX11
 PTHREAD_CFLAGS
 PTHREAD_LIBS
 PTHREAD_CC
 ax_pthread_config
 EGREP
@@ skipping 6765 matching lines @@
 esac
  if test x$ANDROID_HOST = xtrue; then
   ANDROID_HOST_TRUE=
   ANDROID_HOST_FALSE='#'
 else
   ANDROID_HOST_TRUE='#'
   ANDROID_HOST_FALSE=
 fi
 
 
+# Some tools (like mac ones) only support x86 currently.
+case $host_cpu in
+  i?86|x86_64)
+    X86_HOST=true
+    ;;
+esac
+ if test x$X86_HOST = xtrue; then
+  X86_HOST_TRUE=
+  X86_HOST_FALSE='#'
+else
+  X86_HOST_TRUE='#'
+  X86_HOST_FALSE=
+fi
+
+
 # Check whether --enable-processor was given.
 if test "${enable_processor+set}" = set; then :
   enableval=$enable_processor; case "${enableval}" in
                  yes)
                    disable_processor=false
                    ;;
                  no)
                    disable_processor=true
                    ;;
                  *)
@@ skipping 448 matching lines @@
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
 if test -z "${LINUX_HOST_TRUE}" && test -z "${LINUX_HOST_FALSE}"; then
   as_fn_error $? "conditional \"LINUX_HOST\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
 if test -z "${ANDROID_HOST_TRUE}" && test -z "${ANDROID_HOST_FALSE}"; then
   as_fn_error $? "conditional \"ANDROID_HOST\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${X86_HOST_TRUE}" && test -z "${X86_HOST_FALSE}"; then
+  as_fn_error $? "conditional \"X86_HOST\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${DISABLE_PROCESSOR_TRUE}" && test -z "${DISABLE_PROCESSOR_FALSE}"; then
   as_fn_error $? "conditional \"DISABLE_PROCESSOR\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
 if test -z "${DISABLE_TOOLS_TRUE}" && test -z "${DISABLE_TOOLS_FALSE}"; then
   as_fn_error $? "conditional \"DISABLE_TOOLS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
 if test -z "${SYSTEM_TEST_LIBS_TRUE}" && test -z "${SYSTEM_TEST_LIBS_FALSE}"; then
   as_fn_error $? "conditional \"SYSTEM_TEST_LIBS\" was never defined.
@@ skipping 1319 matching lines @@
   exec 5>>config.log
   # Use ||, not &&, to avoid exiting from the if with $? = 1, which
   # would make configure fail if this is the last instruction.
   $ac_cs_success || as_fn_exit 1
 fi
 if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
 $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi